Hemstitching attachment for sewing-machines.



No. 777,621. n PATBNTED DEG. 13,1904. G. W. FREEMAN.

HEMSTITGHING ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED xmms. 1904.

No MODEL.

llllmrmv '.NO. 777,621. Patented December 13, 19041.

NTTED STATES PATENT OEEICE.

GEORGE XV. FREEMAN, OF VEST HOBOKEN, NEV JERSEY, ASSIGNOR OF ONE-HALF TO FRANK HALL, OF RIDGEFIELD, NEV JERSEY.

HEIVISTITCHING 'ATTACHMENT FOR SEWINGIVIACHINESl SPECIFICATION forming part of Letters Patent No. 777,621, dated December 13, 1904.

Application filed January l5, 1904. Serial No. 189,181. (No model.)

T LU who/W Y??? may @Olw'bf face of the plate is inclined from the left to 50 Be it known that I, GEORGE 7. FREEMAN, ward right-that is to say, it declines toward a citizen of the United States, residing at XV est the right-and this incline tends to draw the Hoboken. in the county of Hudson and State upper fabric into the fabric-guides formed in of New Jersey, have invented new and useful the plate and spaced by the separator above Improvements in Hemstitching Attachments described. The separator is further provided 5 5 `for SewingdMachines, of which the following1 with a needle-hole, communicating with which is a specilication. is an escape-slot, the manner in which the at- This lnventlon relates to hemst1tch1ngattachment operates being such that when the i0 tachments to sewing-machines. needle 1s ascending' or descending' the fabrics The object ot the invention is to provide an will be prevented from being drawn into the 60 attachment oi the class described which shall needle-hole, and thus cause uneven sewing or be adapted for use in connection with any puckering oi' the goods. This result is sei'orm oi' presser-bar, which may be used as a cured by the terminal portions of the plate,

I5 plain-stitch attachment without altering' the which coact with the bed-plate to clamp the tensions, which will without the necessity ot' goods lirmly thereagainst. 65 closel attention effect in a rapid and simple rlhe attachment is constructed in such a manner the 'formation of hemstitches, and manner as to permit ol its being readily as which shall besimple of construction, eilicicnt sembled with any ordinary sewing-machiiie 2O and durable in use, and easy of manufacture. without requiring any changes in the struc- With the above and other objects` in view, tural arrangement of the latter that is to 70 as will appear as the nature oi' the invention say, it will be made to iit the various makes is better understood, the same consists in the o'lI sewing-machines and in use takes the novel construction ot' a hemstitching' attachplace oit' the presser-foot without necessitatment for sewing-machines, as will be hereining any change of the thread tensions, and by after fully described and claimed. reason oiI the simplicity of construction. all 75 Generally stated, the device of this inventhe parts being by preference integral, dantion contemplates in its construction an arm ger of derangcment in use is practically obior attachment to the 1n'esser-bar of the maviated. Y

chine and a plate, preferably integral with the ln the accompanying drawings, forming a arm and oi' a length greater than that of the part ot' this specilication, and in which like 8C feed-bar, whereby a portion of the attachment characters ot reference indicate correspondis caused to coaet with the feed-bar to elieet ing parts, there is illustrated one form of emproper feeding ot' the material through the bodiment of the invention capable of carrymachine, and the other portion is adapted to ing the same into practical operation, it becoaet with the bed-plate to hold the fabrics ing understood that the elements therein eX- 85 taut when the feedbar not operating'. 1n hibited may be varied as to shape, proporaddition to these portions ot' the attachment tion, and exact manner ot' assemblage withor plate there is provided intermediate of its out del'iarting 'from the spirit-thereof.

40 ends aportion constituting' a :liabric-separator, ln the drawings, Figure l, is a perspective the same being' of less thickness than the review of the attachment. Fig. 2 is a view in 90 maining portions of the plate, so that in opside elevation, showing the attachment seeration the feed-bar does not contact with it, cured to the presser-bar ol the machine and thereby positively preventing the under tabin cooperative relation with the bedplate ric from traveling faster than the upper fabthereof, the feed bar being shown partly ric. By this arrangement bunching of the broken away. Fio'. 3 is a view in front ele- 95 assembled fabrics is obviated, causing' the asvation oi' the attachment. sembled fabrics to be combined in a neat and Referring to the drawings, A designates positively eil'ective manner. The upper surthe presser-bar oiI an ordinary sewing-machine, B the bed-plate, and C the feed-bar.

As these parts may be of the usual or any preferred construction, detailed description thereof is deemed unnecessary.

The fabrics being assembled are designated by D and E, the fabric designated by D being thevupper fabric and that designated by E being the lower fabric.

The attachment of the present invention comprises a shank or arm l, adapted for attachment to the presser-bar, and a plate 2. the plate, as shown in Fig. 3, being' inclined on its upper side downward toward the right, said incline subserving the function presently to be described. The plate 2, as clearly sh own in Fig. 2, is of greater length than the feedbar, and that portion 3 disposed over the feed-bar is the only part which is adapted to coact directly therewith, the terminal portion 4 of the plate being disposed out of the path of travel of the feed-bar and being designed to coact with the bed-plate to clamp the fabrics D l and E firmly therebetween when the needle ascends or descends, thereby to prevent the fabric being drawn through the needle-hole 5 of the plate. This needle-hole is formed in a tongue 6,wh`ich is separated from the portions 3 and 4 of the plate by recesses 7 and 8, in which the upper fabric is disposed, the fabric being brought upward through the space 8, over the tongue 6, and thence downward through the space 7. As clearly shown in Fig. 1, one wall, 9, of the tongue 6. which constitutes a fabric separator, is beveled, as is alsoone wall, 10, of the recess 7, and by this arrangement the frictional resistance to the passage of the goods through the attachment is reduced toa minimum. In order to permit the thread to escape from the tongue 6, there is an escapeslot 11 provided, which communicates with the needle-hole 5, and to cause the upper fabric D to remain within the attachment and to check it against any tendency to work out of the slot the upper wall or face of the plate is inclined, as shown in Fig. 3. Under the arrangement shown when the feed-bar is depressed the fabrics are held firmly between the portions 3 and 4 of the attachment and the bed-plate B while the needle is making the stitch. As the needle is withdrawn the feed-bar rises and lifts the attachment from the bed-plate and acts upon the fabrics under a part of portion 3 and carries them rearward. The feed-bar then descends, allowing the portions 3 and 4 of the attachment to clamp the fabrics to the bed-plate while the next stitch is being made.

By reducing the under face of the fabricseparator 6 so that it lies above the plane of the portions 3 and 4 there will be no contact between the separator and the feed-bar, so that the latter cannot effect feeding of the fabric through the machine. In fact, as shown, the only feed takes place Linder the portion 3 of the plate, the guide portions 3 and 4operating positively as a fabric-clamp.

In order to understand the manner in which the attachment works, an explanation is furnished of a complete cycle of a sewing-machine provided therewith. Let it be supposed that the needle is up and that thepresser-bar to which the attachment is secured held up from the bed-plate by any one of the devices forming a part of every sewing-machine to 1 ing completed this movement,the feed-bar descends below the bed-plate, allowing the attachment to come into Contact with the bedplate at the portions 3 and 4 with the fabrics between, thus holding the fabrics firmly on each side of the needle, which now descends and makes the stitch. time the feed-bar has been moved forward below the level of the bed-plate, andas the needle rises the feed-bar also rises,coming into contact with the fabrics under the portion 3 of the attachment. This upwardmovement of the feed-bar also raises the attachment from contact with the bed-plate and releases the fabrics under the portion 4 of the attachment, but grips them firmly between the portion 3 of the attachment and the feed-bar. The feed-bar now starts on its rearward movement and carries the fabrics with it and presents them for the next stitch. This last movement brings the parts back to the point in the operation of the machine from which they started.

It will be seen from the foregoing description that the attachment of this invention, while being exceedingly simple in construction, will be found thoroughly eflicient and durable in use and will in a positive and certain manner eliminate certain objectionable features hereinbefore present in devices of this character.

Having thus described the invention, what I claim is l. An attachment of the class described, comprising a shank or arm, and a plate disposed at right angles thereto and provided near one end with a portion to engag'e the feed-bar and bed-plate of a sewing-machine, and'its other end with a portion to coact with the bed-plate of the machine to clampI the goods against movement, the two parts being spaced by a fabric-separator of less vertical thickness than the plate and having therein a needle-hole and an escape-slot.

2. An attachment of the class described in- In the mean- IOO IIO

under surface of the intermediate fabric-separator, said nfabric-sepaiator having,I a needlehole and an escape-slot.

In testimony whereof 1f have hereunto set my hand in presence of two subscribing witnesses.

GEORG-E W. FREEMAN.

WV itnesses:

GEORGE BACH, C. H. C. JAGELS. 

